Infusion Pump Controller with Multi-Mode Indicator Logic
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Solution Overview
Problem
Automated infusion devices lack an effective user interface for communicating operational information, such as mode changes, in a consistent and noticeable manner, which can lead to user confusion and inadequate awareness of ongoing infusion processes.
Innovation Solution
The infusion device incorporates a pump controller that operates in therapy and stand-by delivery modes, utilizing a combination of audible alarms and multiple sets of visible indicators (e.g., LEDs) to provide clear and consistent communication of operational states, ensuring users are informed of mode transitions and ongoing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated infusion devices operate with minimal human intervention, then productivity is improved, but loss of information occurs as users are not adequately informed of operational changes
Solution Approach 1:
The patent implements a feedback mechanism through multiple indicators (visual LED indicators and audible alarms) that continuously communicate the operational state of the infusion device to the user. When the device transitions from therapy delivery mode to stand-by mode, the controller activates specific indicators to provide feedback about the mode change, ensuring users remain informed despite automated operation.
2Loss of information
If multiple indicators are used to communicate operational states, then loss of information is reduced, but device complexity increases
Solution Approach 1:
The patent segments the indication system into distinct functional groups: visual indicators (LEDs) and audible indicators (alarms). Each segment serves a specific communication purpose - visual indicators display operational modes through different patterns, while audible alarms provide reinforcement for significant state changes. This segmentation allows comprehensive information communication while maintaining modular design that manages complexity.
Solution Approach 2:
The patent adds temporal dimension to the indication system by using different activation patterns (continuous vs. intermittent) and timing sequences. The controller activates indicators in specific sequences and patterns to convey different operational states, transforming a static indication system into a dynamic multi-dimensional communication system that provides rich information without requiring additional physical indicators.
3Loss of information
If significant changes are made in communication manner for mode changes, then loss of information is reduced, but device complexity increases
Solution Approach 1:
The patent employs periodic action through intermittent activation of audible alarms and visual indicators during mode transitions. Rather than continuous notification, the controller activates indicators in periodic pulses or sequences that draw attention to the mode change without creating constant distraction. This periodic notification approach provides sufficient information about operational changes while simplifying the control logic compared to continuous monitoring and notification systems.
Data Source
AI summary
An infusion device includes a pump configured to deliver a fluid in at least a therapy delivery mode and a stand-by delivery mode. The infusion device includes an audible alarm and at least first, second and third sets of visible indicators. The infusion device includes a pump controller coupled to the pump, the audible alarm, and the visible indicators. The pump controller is configured to operate the pump in the therapy delivery mode or the stand-by delivery mode, and to actuate the first set of visible indicators in the therapy delivery mode and the stand-by delivery mode, to actuate the second set and the audible alarm at an end of the therapy delivery mode and at intervals during the stand-by delivery mode, and to actuate the third set during the stand-by delivery mode when the second set is deactivated.